Enzyme lactase is responsible for the breakdown of lactose into

Options

A. Glucose + Fructose
B. Glucose + Galactose
C. Glucose + Glucose
D. Fatty acids + Glycerol

Answer

**Step-by-Step Solution:**

1. **Understanding Lactose**: Lactose is a disaccharide sugar composed of two monosaccharides: glucose and galactose. It is commonly found in milk and dairy products.

2. **Role of Lactase**: The enzyme lactase is responsible for the hydrolysis (breakdown) of lactose. It catalyzes the reaction that splits lactose into its constituent monosaccharides.

3. **Chemical Reaction**: The breakdown of lactose by lactase can be represented by the following chemical equation:
\[ \text{Lactose} \xrightarrow{\text{Lactase}} \text{Glucose} + \text{Galactose} \]

4. **Identifying the Correct Option**: Among the options provided:
- Glucose + Fructose (forms sucrose) - Incorrect
- Glucose + Galactose (forms lactose) - Incorrect
- Glucose + Glucose (forms maltose) - Incorrect
- Fatty Acid + Glycerol (forms fat) - Incorrect
- The correct answer is Glucose + Galactose, as lactase hydrolyzes lactose into these two monosaccharides.

5. **Conclusion**: Therefore, the enzyme lactase is responsible for the breakdown of lactose into glucose and galactose.

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